Joanna MacGregor
type: MusicGroup
genre: classical piano
description: Joanna Clare MacGregor (born 16 July 1959) is a British concert pianist, conductor, composer, and festival curator. She is Head of Piano at the Royal Academy of Music and a professor of the Universit
popularity: 19
followers: 1947
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  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-14T15:20:52Z
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album: Joanna MacGregor - Harrison Birtwistle - Antiphonies & Harrison's Clocks
  type: MusicAlbum
  date published: 1999
track: C:2 Lowside Blues
  type: MusicRecording
  duration: PT1M28S
  duration ms: 88933
  explicit: false
  by artist: Joanna MacGregor
  by artist: Dinara Klinton
  in album: Piano Exam Pieces 2025 & 2026, ABRSM Grade 7
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    date published: 2024-06-06
  popularity: 9
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  additional property: OTSTimestamp
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    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46925d586097a514b238d3856c0f396400504989f00a5085611ba16507d724ef. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEYQ2457634.
    date published: 2026-07-02T03:55:08Z
  audio: C:2 Lowside Blues
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    additional property: Key Name
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    additional property: Mode Name
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